BMW issued a recall on the 3 SERIES model

Certain vehicles may experience the loss of one or more rear lamp functions (tail, brake, turn signal) on the portion of the rear lamp assemblies that are mounted in the body (the portion of the lamps mounted on the trunk are not affected). Failure of any rear lamp function may result in the following road users being unaware of the driver's intentions, as well as reducing vehicle conspicuity during hours of darkness, which could increase the risk of a crash causing property damage and/or personal injury. Correction: Dealers will install an additional electrical ground connection to the rear lamp circuitry. Rear lamp function will be checked and, if necessary, further electrical repair may be necessary, including the replacement of the 8-pin connector housing.